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Solar panel cost in Newry, Mourne and Down (BT24)

See realistic solar installation costs, savings and payback for BT24 (Newry, Mourne and Down) in under a minute using official UK data. Start with the calculator, then get a no-obligation quote from an MCS-certified installer. You can also ask the SolarByPostcode assistant to sanity-check your roof, bills and plans.

Solar Calculator

Change the settings below to see how costs and savings work for your situation.

System Size

Roof Direction

Battery Storage

Export Value

Your Numbers

Break-even
29.6 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£330
What you save every year
Profit Over 25 Years
£-1,513
After paying itself off, you're this much ahead

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How we calculate this

Solar generation: Based on typical south-facing roof at 35° angle. We account for weather, dirt, and system losses (14%).

How much you'll use directly:

  • Without battery: You'll use about 40% of what you generate. The rest gets sold back to the grid.
  • With 5 kWh battery: You'll use about 70% (battery stores extra for evening use).
  • With 10 kWh battery: You'll use about 75% (more storage means less exported).
  • Panel-only payback: The official cost per kW is lower above 4 kW, so a 5–6 kW system can pay back a little faster than a 3–4 kW system on otherwise identical assumptions.
  • Battery & payback: Batteries raise self-use and cut bills, but added hardware cost often lengthens break-even at typical UK rates.
  • When a battery can still make sense:
    • Evening-heavy usage patterns
    • Time-of-use tariffs / cheap night rates
    • Low export rate vs. high unit rate
    • Heat pump or EV charging synergy
    • Optional backup/resilience (system-dependent)
    • Lower evening-hour CO₂ vs. grid

Panel costs: Uses March 2026 TIC mean installation costs: £1,827/kW up to 4 kW and £1,628/kW above 4 kW.

Other costs: Battery prices are modelled at £700 per kWh. Export tariffs vary by supplier (usually 5–15p per kWh).

Grid connection: Systems up to about 3.7 kW typically need just a notification (G98). Larger systems may need permission (G99).

These are typical values based on average usage patterns. Your actual results will vary based on your roof, shading, and how you use electricity.

Your area in context

In Northern Ireland, the current unit rate is 0.00p/kWh with a 0.00p/day standing charge. Your postcode’s south-facing sunshine yield is 917 kWh/kW — 74 below the regional median (991).

Read the full story

A typical roof here lands around 6.0 kW, with most eligible homes comfortably fitting within 3–6 kW. Each kilowatt of panels produces roughly 917 kWh per year on a south-facing roof. We value self-used electricity at 0.0p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
0.0p/kWh
Standing charge
0.0p/day
Sunshine yield (south)
917 kWh/kW
Export price (baseline)
10p/kWh

Browse the scenarios below. Each battery size has its own expand — open the one that matches your plan (or just explore). For each system size (2–8 kW) we show annual output, how much you use directly, what gets exported, annual benefit, upfront cost, break-even, and a 20-year net. Negative numbers are possible — that’s the honest trade-off when adding more battery than your usage profile justifies.

No battery 5 kW example → Annual benefit: £275, Upfront: £8,139, Break-even: 29.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1834 kWh 734 kWh 1100 kWh £0 £110 £110 £3,256 29.6 yrs £-1,055
3 kW 2751 kWh 1100 kWh 1651 kWh £0 £165 £165 £4,883 29.6 yrs £-1,582
4 kW 3668 kWh 1467 kWh 2201 kWh £0 £220 £220 £6,511 29.6 yrs £-2,109
5 kW 4585 kWh 1834 kWh 2751 kWh £0 £275 £275 £8,139 29.6 yrs £-2,637
6 kW 5502 kWh 2201 kWh 3301 kWh £0 £330 £330 £9,767 29.6 yrs £-3,164
7 kW 6419 kWh 2568 kWh 3851 kWh £0 £385 £385 £11,394 29.6 yrs £-3,691
8 kW 7336 kWh 2934 kWh 4402 kWh £0 £440 £440 £13,022 29.6 yrs £-4,219

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

3 kWh battery 5 kW example → Annual benefit: £183, Upfront: £10,239, Break-even: 55.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1834 kWh 1100 kWh 734 kWh £0 £73 £73 £5,356 73.0 yrs £-3,888
3 kW 2751 kWh 1651 kWh 1100 kWh £0 £110 £110 £6,983 63.5 yrs £-4,782
4 kW 3668 kWh 2201 kWh 1467 kWh £0 £147 £147 £8,611 58.7 yrs £-5,677
5 kW 4585 kWh 2751 kWh 1834 kWh £0 £183 £183 £10,239 55.8 yrs £-6,571
6 kW 5502 kWh 3301 kWh 2201 kWh £0 £220 £220 £11,867 53.9 yrs £-7,465
7 kW 6419 kWh 3851 kWh 2568 kWh £0 £257 £257 £13,494 52.6 yrs £-8,359
8 kW 7336 kWh 4402 kWh 2934 kWh £0 £293 £293 £15,122 51.5 yrs £-9,253

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

5 kWh battery 5 kW example → Annual benefit: £138, Upfront: £11,639, Break-even: 84.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1834 kWh 1284 kWh 550 kWh £0 £55 £55 £6,756 122.8 yrs £-5,655
3 kW 2751 kWh 1926 kWh 825 kWh £0 £83 £83 £8,383 101.6 yrs £-6,733
4 kW 3668 kWh 2568 kWh 1100 kWh £0 £110 £110 £10,011 91.0 yrs £-7,810
5 kW 4585 kWh 3210 kWh 1376 kWh £0 £138 £138 £11,639 84.6 yrs £-8,888
6 kW 5502 kWh 3851 kWh 1651 kWh £0 £165 £165 £13,267 80.4 yrs £-9,965
7 kW 6419 kWh 4493 kWh 1926 kWh £0 £193 £193 £14,894 77.3 yrs £-11,043
8 kW 7336 kWh 5135 kWh 2201 kWh £0 £220 £220 £16,522 75.1 yrs £-12,120

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

7.5 kWh battery 5 kW example → Annual benefit: £124, Upfront: £13,389, Break-even: 108.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1834 kWh 1339 kWh 495 kWh £0 £50 £50 £8,506 171.8 yrs £-7,515
3 kW 2751 kWh 2008 kWh 743 kWh £0 £74 £74 £10,133 136.4 yrs £-8,648
4 kW 3668 kWh 2678 kWh 990 kWh £0 £99 £99 £11,761 118.8 yrs £-9,780
5 kW 4585 kWh 3347 kWh 1238 kWh £0 £124 £124 £13,389 108.2 yrs £-10,913
6 kW 5502 kWh 4017 kWh 1486 kWh £0 £149 £149 £15,017 101.1 yrs £-12,045
7 kW 6419 kWh 4686 kWh 1733 kWh £0 £173 £173 £16,644 96.0 yrs £-13,178
8 kW 7336 kWh 5355 kWh 1981 kWh £0 £198 £198 £18,272 92.2 yrs £-14,311

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

10 kWh battery 5 kW example → Annual benefit: £115, Upfront: £15,139, Break-even: 132.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1834 kWh 1376 kWh 459 kWh £0 £46 £46 £10,256 223.7 yrs £-9,339
3 kW 2751 kWh 2063 kWh 688 kWh £0 £69 £69 £11,883 172.8 yrs £-10,508
4 kW 3668 kWh 2751 kWh 917 kWh £0 £92 £92 £13,511 147.3 yrs £-11,677
5 kW 4585 kWh 3439 kWh 1146 kWh £0 £115 £115 £15,139 132.1 yrs £-12,846
6 kW 5502 kWh 4127 kWh 1376 kWh £0 £138 £138 £16,767 121.9 yrs £-14,016
7 kW 6419 kWh 4814 kWh 1605 kWh £0 £160 £160 £18,394 114.6 yrs £-15,185
8 kW 7336 kWh 5502 kWh 1834 kWh £0 £183 £183 £20,022 109.2 yrs £-16,354

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

13.5 kWh battery 5 kW example → Annual benefit: £105, Upfront: £17,589, Break-even: 166.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1834 kWh 1412 kWh 422 kWh £0 £42 £42 £12,706 301.2 yrs £-11,862
3 kW 2751 kWh 2118 kWh 633 kWh £0 £63 £63 £14,333 226.5 yrs £-13,068
4 kW 3668 kWh 2824 kWh 844 kWh £0 £84 £84 £15,961 189.2 yrs £-14,274
5 kW 4585 kWh 3530 kWh 1055 kWh £0 £105 £105 £17,589 166.8 yrs £-15,480
6 kW 5502 kWh 4237 kWh 1265 kWh £0 £127 £127 £19,217 151.9 yrs £-16,686
7 kW 6419 kWh 4943 kWh 1476 kWh £0 £148 £148 £20,844 141.2 yrs £-17,892
8 kW 7336 kWh 5649 kWh 1687 kWh £0 £169 £169 £22,472 133.2 yrs £-19,097

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

Figures are illustrative and use the same method as the calculator above. For exact results, adjust your roof direction, tariff, and usage in the calculator.

Before you request quotes in Newry, Mourne and Down

Use the numbers above to sanity-check installer quotes. The main things to compare are system size, battery assumptions, payback claims, MCS certification, DNO paperwork and export assumptions.

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Check what MCS certification means

Understand DNO, G98 and G99 export limits

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This is a practical sanity-check request, not an instant quote promise. The Blue Ape quote route above remains available if you already want installer introductions.

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Insights for BT24

Figures below are tailored to BT24 — click through for full league tables.

Aspect Penalty View ranking →
East −21.5% West −20.2%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in BT24

Monthly generation per kilowatt of solar panels

kWh 29 Jan 48 Feb 82 Mar 109 Apr 121 May 116 Jun 110 Jul 101 Aug 82 Sep 58 Oct 38 Nov 23 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 43.7% of an average month (Dec–Feb)

Best / worst month: May / Dec

These figures show output per kilowatt (kW) of panels installed. In winter, a 1 kW system here produces about 33 kWh per month; the average month produces around 76 kWh. So a typical 4 kW home system would generate roughly 134 kWh in winter, or 306 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
0.00p/kWh
Daily Fixed Charge
0.00p/day
Local Sunshine
917kWh/kW
A 1 kW system generates ~917 kWh per year. A typical home uses ~2,700 kWh per year.
Typical System Size
6.0kW
For houses & bungalows in this area

Local Property Data

Property Types

No EPC data available for this outcode

Coverage

Newry, Mourne and Down (93%)|Lisburn and Castlereagh (7%)

Areas Covered

Saintfield, Ballynahinch, Drumaness, Kilmore, Ballyward, Derryboy, Dromara, Ballymacbrennan + 3 more

Data Sources & Assumptions

Solar yield: PVGIS (EU Joint Research Centre), January 2025 data

Electricity rates: Ofgem price cap,

Installation costs: DESNZ/MCS data, March 2026 (TIC)

Property data: EPC open data (Open Government Licence), aggregated

All estimates are typical values. Actual results vary based on your specific situation, roof characteristics, and usage patterns.

Compare nearby areas

Nearby in Northern Ireland

BT26 (Lisburn and Castlereagh)
≈13.9 km away
Local sunshine: ~889 kWh/kWp · -3% vs BT24
BT30 (Newry, Mourne and Down)
≈14.4 km away
Local sunshine: ~976 kWh/kWp · +6% vs BT24
BT27 (Lisburn and Castlereagh)
≈15.1 km away
Local sunshine: ~894 kWh/kWp · -2% vs BT24
BT8 (Lisburn and Castlereagh)
≈15.9 km away
Local sunshine: ~891 kWh/kWp · -3% vs BT24
BT31 (Newry, Mourne and Down)
≈15.9 km away
Local sunshine: ~916 kWh/kWp · -0% vs BT24
BT25 (Armagh City, Banbridge and Craigavon)
≈16.6 km away
Local sunshine: ~886 kWh/kWp · -3% vs BT24

Similar sunshine across the UK

L40 (West Lancashire)
~917 kWh/kWp · +0% vs BT24
LA4 (Lancaster)
~917 kWh/kWp · -0% vs BT24
LA3 (Lancaster)
~917 kWh/kWp · -0% vs BT24